220031222101 has 4 divisors (see below), whose sum is σ = 220738718304. Its totient is φ = 219323725900.

The previous prime is 220031222083. The next prime is 220031222107. The reversal of 220031222101 is 101222130022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220031222101 - 2¹¹ = 220031220053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220031222107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353747635 + ... + 353748256.

It is an arithmetic number, because the mean of its divisors is an integer number (55184679576).

Almost surely, 2^220031222101 is an apocalyptic number.

It is an amenable number.

220031222101 is a deficient number, since it is larger than the sum of its proper divisors (707496203).

220031222101 is an equidigital number, since it uses as much as digits as its factorization.

220031222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707496202.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220031222101 its reverse (101222130022), we get a palindrome (321253352123).

The spelling of 220031222101 in words is "two hundred twenty billion, thirty-one million, two hundred twenty-two thousand, one hundred one".